We will be in this race as long as it takes. We're going to be in as many states as it takes to ensure that I'm the nominee and that Donald Trump never gets to 1,236 delegates, which is what he needs to be the nominee.

I feel bad for the kids that are in school right now and the young people all across America who don't realize that the grownups who are supposed to be running this country are the verge of leaving them as the first generation of Americans worse off than the generation before.

We can't win - if we nominate someone - if we nominate someone that half of the Republican Party hates, we're going to be fighting against each other all the way to November [of 2016]. We will never win that way.

We understand that ISIS is a group that's growing in its governance of territory. It's not just Iraq and Syria. They are now a predominant group in Libya. They are beginning to pop up in Afghanistan. They are increasingly involved now in attacks in Yemen. They have Jordan in their sights. This group needs to be confronted with serious proposals.

Even if we didn't have a single person in the USA in violation of immigration laws, we'd still have to do immigration reform, because our legal immigration system is broken. It's not good for anybody.

We live in a society obsessed with public opinion. But leadership has never been about popularity.

You know those movies where the people in the audience are screaming, 'Don't go in that door!' because you know the killer is there? Well, it is the same thing with this debt. We know how this ends.